Well, from what i understand from the Mesa delelopers list, there is only Oded who just recently started working on the driver and said that it is completly broken. The good news from this month is that he managed to fix some basic stuff. The bad news is that we still have a long road and he is just one guy who never worked before on this issue. The stuff he is working on is pretty much sort of top layer as there are even more bugs at a more fundamental base as you can see with llvmpipe which also is not working.